CVE-2026-21659CRITICAL 9.8EPSS p55.2%

CVE-2026-21659CVE-2026-21659

Description

Unauthenticated Remote Code Execution and Information Disclosure due to Local File Inclusion (LFI) vulnerability in Johnson Controls Frick Controls Quantum HD allow an unauthenticated attacker to execute arbitrary code on the affected device, leading to full system compromise. This issue affects Frick Controls Quantum HD: Frick Controls Quantum HD version 10.22 and prior.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.91% probability of exploitation · percentile 55.2% · 2026-06-19T12:03:05Z
Published2026-02-27
Last modified2026-03-02

Underlying weaknesses· 2

CWE-23CWE-22

References

  1. https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-01
  2. https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

2

TypeTargetConfidenceTier
WeaknessImproper Limitation of a Pathname to a Restricted Directory ('Path Traversal')cwe-220%live
WeaknessRelative Path Traversalcwe-230%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.